Finding the Fourth Proportional to 78,896.76, 118,274.79 and 28,965.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,896.76 : 118,274.79 = 28,965.39 : x
2. Step 2: Convert to fraction form
   78,896.76/118,274.79 = 28,965.39/x
3. Step 3: Cross multiply
   78,896.76x = 118,274.79 × 28,965.39
4. Step 4: Simplify right side
   78,896.76x = 3,425,875,419.52
5. Step 5: Solve for x
   x = 3,425,875,419.52/78,896.76
6. Step 6: Final answer
   x = 43,422.26